First off, the "ridiculously brutal training 3x per day" was actually 30 minute sessions dedicated to each of the lifts. The front squat, the clean & jerk, the snatch, and the back squat. Generally the lifters performed them in that order for a morning session and a P.M. session.
Furthermore, Ibadjaev has been quoted saying the body can and will adjust to this sort of trauma to the nervous system. Whatever BrozKnowz is saying, while applicable and credible, is like prioritizing a secondary source over THE PRIMARY SOURCE for the system.
Whilst you can claim PEDs and AADs all you'd like, the bulgarian system was not the only system utilizing the drugs at the time and even though many of their lifters were caught for the drugs, t assume that PEDs and AADs are the only reason these lifters were able to survive this system is ludicrous.
Secondly, working up to a daily max is the basis of Ivan's method....